Which of the following will not work as a balanced modulator?
A) a push-pull modulator
B) a ring-diode modulator
C) an LM1496 integrated circuit stage
D) a dual-gate FET and a band-pass filter

Question

Quizplus · Accepted Answer

A balanced modulator is designed to suppress the carrier signal and allow only the sidebands to pass through, which is essential in generating a double sideband suppressed carrier (DSB-SC) signal. A push-pull modulator (A), a ring-diode modulator (B), and an LM1496 integrated circuit stage (C) are all capable of functioning as balanced modulators, effectively suppressing the carrier while allowing the sidebands to pass. However, a dual-gate FET with a band-pass filter (D) does not inherently perform carrier suppression to the extent required for a balanced modulator. The band-pass filter may shape the frequency response but does not contribute to the carrier suppression mechanism necessary for a balanced modulator's operation.

Which of the Following Will Not Work as a Balanced